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Finding the Fourth Proportional to 331.72, 497.88 and 169.50

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Solution

The fourth proportional to 331.72, 497.88 and 169.50 is: 254.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.72 : 497.88 = 169.50 : x
  2. Step 2: Convert to fraction form
    331.72/497.88 = 169.50/x
  3. Step 3: Cross multiply
    331.72x = 497.88 × 169.50
  4. Step 4: Simplify right side
    331.72x = 84,390.66
  5. Step 5: Solve for x
    x = 84,390.66/331.72
  6. Step 6: Final answer
    x = 254.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.